Pat I was refering to moving my pictures now in the files section to
the photo section.

No I haven't noticed a spiral slipstream.

Thanks Jim

--- In Q-LIST@..., "Patrick Panzera" <panzera@...> wrote:

This is the kind of stuff I'd do on a regular basis if only I had a

plane to

fly and experiment with. :(

Good job Jim.

But on a slightly different topic...

We've all heard that the "left turning tendency" is partly due to the
"spiral slipstream" but I've never seen any physical evidence of

this on any

of the planes I rent, like bugs on the left side of the vertical

stab or oil

from the belly making its way up the left side of the fuselage and

onto the

vertical stab and/or rudder.

With your new oil flow tests, are there any signs of the "spiral

slipstream"

in the oil on your plane?

Thanks!

Pat

That sounds good Larry but did you look at the actual facts with the
pix of my canard flow test this weekend. That may shoot your theory
all to hell. The main wing is next. What are you doing to promote
the species? Are you in the air still?